yes works

I can't answer whether the RAM is compatible with Dell, but 2x32 GB RAM is currently running very well and fast on my HP ProDesk600 G5MT! ..... There have been no problems so far....

The manufacturer does not mention in its specifications that this RAM bar must be installed twice.

Yes, according to my research, this module should work. Since this is a Crucial module, I can recommend using their System Scanner or System Advisor to confirm compatibly: https://www.crucial.com/ Please note that the "performance sweet spot" for more recent AMD chips remains between DDR4-3200 - 3600.